Title :
ATTEM: An Instrument System Using Transient Electromagnetic Pulse for Subsurface Imaging
Author :
Zhong, Wang ; Jun, Lin ; Shengbao, Yu ; Yanju, Ji ; Guohua, Zhou
Author_Institution :
Coll. of Instrum. Sci. & Electr. Eng., Jilin Univ., Changchun
Abstract :
To improve the subsurface imaging capability of transient electromagnetic method, we developed a new instrument system named ATTEM. By removing the primary electromagnetic field from the total electromagnetic field in early stage of transient response, the ATTEM can obtain the pure secondary electromagnetic field, which related to the electrical properties of the subsurface geology. The meaningful improvements in ATTEM comprised two aspects: (1) ATTEM transmitter can record the turn-off current waveform to estimate the primary electromagnetic field. (2) ATTEM receiver adopted double ADCs sampling technique to enlarge the dynamic range of recording and improve the resolution of early transient response
Keywords :
buried object detection; electromagnetic fields; electromagnetic pulse; geomagnetism; geophysical equipment; terrestrial electricity; transient response; ATTEM; double ADCs sampling technique; electromagnetic field; subsurface geology; subsurface imaging; transient electromagnetic method; transient electromagnetic pulse; transient response; turn-off current waveform; Delay effects; EMP radiation effects; Electromagnetic fields; Electromagnetic transients; Geology; Instruments; Switches; Transient response; Transmitters; Voltage;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2006. IMTC 2006. Proceedings of the IEEE
Conference_Location :
Sorrento
Print_ISBN :
0-7803-9359-7
Electronic_ISBN :
1091-5281
DOI :
10.1109/IMTC.2006.328568
